Tenbroeck b



UNITED STATES PATENT OFFICE.

TENBROECK B. MAYELL, 0F ALBANY, NElV YORK, ASSIGNOR OF ONEHALF TO MARTIN A. COMMERFORD, OF SAME PLACE.

VEHICLE-SPRING SUPPORT.

SPECIFICATION forming part of Letters Patent No. 463,293, dated November 17, 1891.

Application filed August 11, 1891.

useful Improvement in Vehicle-Spring Sup-' ports, of which the following is a specification.

My invention relates to that class of deyices which are used for the purpose .of givingsupport to and increasing the resisting power of the ordinary elliptic vehicle-spring; and it consists, as will hereinafter be more fully set forth, of an upright column of a height less than the length of the minor axis of the ellipse formed by a vehicle-spring,co1nposed of some suitable springy material and provided with a top plate and a base-plate, said base-plate being adjustably secured to the inner face of one of the halves of the ve hlcle-spring by means of screws or clamps.

Accompanying this specification and forming a part of it is one plate of drawings containing four (4) figures illustrating my inventio11,in all of which similar letters refer to corresponding parts.

Figure 1 shows my invention attached to a vehicle-sprin g. Fig. 2 is a perspective of my improved vehicle-spring support. Fig. 3 shows the top plate of my support, and Fig. 4 is the clamp used to secure the support to the vehiole-spring.

As I have said, any suitable springy material can be used in the construction of my improved spring-support5 but I use, preferably, a spiral steel spring A. Secured to one end of A, or, if desired, integral with it, is a spring baseplate B, constructed with the downwardly-bent arms I) b, the outer ends of said arms being rounded .up' and back. A clamp C, to secure the support to a vehicle-spring, is formed of the screw-threaded rod R, having the fixed jaw c with its inner face serrated, the jaw 0 moving on said rod, its inner face also serrated, and the thumb-screw 0 D is a plate secured to the upper or free end of A, and is furnished with the oppositelyplaoed flanges (Z (Z, running parallel with the direction of the vehiclespring.

To use my improved spring-support, the arms I) b of the base-plate B are secured to the inner face of one of the halves of the vehicle-spring ordinarily the lower-by means seen No. 402,335, (No model.)

ing the vehicle-spring S, the leaves of the upper half of the said spring are pressed down until they rest on the top plate D, as shown by the dotted line in Fig. 1, and between the flanges cl d, which latter serve to hold it securely on D. At this point the resisting power of the spring A, with its springy baseplate B, comes to the aid of S and enables it to bear in safety a load whose weight would otherwise break or strain it.

It will be seen that no use is made of my improved spring-support,even when attached, until there is need for it, and that the device can be carried separately and applied readily. It will also be observed that by making the base-plate B in the form of a flat downwardly-bent spring having upwardly and backwardly curved arms I) b an auxiliary spring-support is provided, which does not come into use until the resisting power of the vehicle-spring and the upright spiral spring is absorbed or become rigid, at which time it will yield if the weight of the load is sufficient to require it, and thereby relieve the vehicle-spring of overstrain and preventits being broken.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In combination with a vel1icle-spring,tho upright spring A, having a downwardly-bent spring base-plate B, having upwardly and backwardly-eurved arms 11 b, substantially as and for the purpose described.

2. In combination with a vehicle-spring, the upright spring A interposed between the upper and lower leaves of the vehicle-spring, its upper end when not depressed lying a short distance below the upper leaves of thevehiclespring, the plate D, having oppositely-placed flanges (Z (Z running parallel with the direction of the vehicle-spring, and downwardly-bent spring base-plate D, having upwardly and backwardly curved arms I) b, substantially as described.

3. In combination with a vehicle-spring, the upright supporting-spring A interposed between the upper and lower leaves of the vehicle-spring having a downwardly-bent spring base plate B, which serves as a means of attachment and as an auxiliary spring-support for the vehicle-spring, substantially as described.

4. In combination with a vehicle-spring, the upright supporting-spring A interposed between the upper and lOWQI'JlBLVGS of the vehicle-spring, its upper end, when the vehiclespring is not depressed, lying a short distance below the upper leaves of the vehicle-spring, the plate D, having oppositely-placedflanges (1 (Z running parallel with the direction of the vehicle-spring, downwardlyrbent spring baseplate B, having upwardly and backwardly .curved arms I) b, and the open jaw-clamp, formed of a screw-threaded rod R, having a fixed jaw c with its inner face serrated, the jaw 0, moving on said rod, its inner face also serrated, and the thumb-screw c substantially as described.

. In witness whereof I have hereunto set my hand this 23d day of. June, 1891.

TENBROEOK B. MAYELL. In presence of GEORGE W. GIBBoNs, HORACE L. HIoKs. 

